WZJRJ28

Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 24046   Accepted: 5947 Description Imagine you are attending your math lesson at school. Once again, you are bored because

题目大意:给n(n 分析:

As you probably know, Anton goes to school. One of the school subjects that Anton studies is Bracketology. On the Bracketology lessons students usually learn different sequences that consist of round b

Given a simple graph, output the number of simple cycles in it. A simple cycle is a cycle with no repeated vertices or edges. Input The first line of input contains two integers n and m (1 ≤ n ≤ 19,

Description hannnnah_j is a teacher in WL High school who teaches biology. One day, she wants to test m students, thus she arranges n different seats around a round table. In order to pre

B. Puzzles time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Barney lives in country USC (United States of Charzeh). USC

Mike wants to prepare for IMO but he doesn't know geometry, so his teacher gave him an interesting geometry problem. Let's define f([l, r]) = r - l + 1 to be the number of integer points in the segme

As Famil Door’s birthday is coming, some of his friends (like Gabi) decided to buy a present for him. His friends are going to buy a string consisted of round brackets since Famil Door loves string of

Spongebob is already tired trying to reason his weird actions and calculations, so he simply asked you to find all pairs of n and m, such that there are exactly x distinct squares in the table consis

There are n people numbered from 1 to n. Each people have a unique message. Some pairs of people can send messages directly to each other, and this relationship forms a structure of a tree. In one tur